Automatic liquid-weighing machine



sept. 21, 1926. 1,600,917

G. L.. w1| A1ME AUTOMATIC LIQUID WEIGHING MACHINE Filed April 1, 1925 3sheets-smet 1 l .'l hv Sept. 21,1926. 1,600,917

` G. .w1L.LA|ME A f ATOMATIG LIQUID WEIGH-ING MACHINE Filed April 4.1925 C5 'Sheets-Shee'i 2 AUUHNEY @HMC/a Sept. 21 ,Y 1926.

G. L. WILLAIME AUTOMATIC LIQUID WEIGHING MACHINE F'led April 4, 1925 3Sheets-Sheet 5 Patented Sept. 2l, 1926.

:PA/TENT IF'FIIC'E.

GEORGES. LOUIS 'WILLAIME/.i' OF PARIS, FRANCE.

AUTOLMTICA LIQUID-WEIGHINGf IMACHINE.

^=Applicat-in filed- April- 4, 19225,v -Sera1No.f20.633 and in FranceApri1v22, 1924.

The object of my invention is to provide ani, automat-icliquid-.weighing machine.

In-ordenwto makemy said invention more clearly understood I- haveillustrated, as an 7'5 example, an embodiment .thereofrv in and byadrawing1 appendedhereto and .wherein Figurel 11 is. a vertical section.of my niarChine on ylinef 1-1-Fig. 3;

:Figure-2 :is a;,fpartsectional side view .1o thereof.

iFigures.3.-andy4 are sectio11s.along lines v3-3.ande-4i, respectively,of Fig. l.

Figuresigand are, respectively, a part- Seotional side view of. amodification and a 15 mention alongline6-6 thereof.

111 all the' figures the same reference letdZaTS denote the same parts.

:iMyy weighing-machine .is .composed essentially ofv a reservoir Rfintowhich is fed the liquidato .bew,eighed;va second reservoir F 'forming av fioatinside thevffirst one; and a Weight movable Within reservoir 'Fand .correspondinggtothequantity of liquid discharged at each` weighing.Said weight M .25 will beioperatech lthatyis to say alternatelyliftedfanddowered, by a hydraulic device, the piston. P ofrwhichisadapted to. alternately nelease and engage weight y-Mf by.meansofhooks K.

AvReservoirxR is providedwith an linlet valve S for the liquid having avcounterpoise ci, and yis yadditionallyprovided with a sloping bottomedcirculargutter designed to collect .liquid overflowing from reservoir R;

saidgutter has at its ylowest part a double 4valve .j -j fitted with acounterpoise c` and zpermittingrthefliquid to be discharged either Yforshipment or into a tilting vessel V, according as the .counterpoise c is:thrown to .40 the right or to they left. (Figure 2). The .hydraulicdevice, which is` aisinglc action one, comprises a distributor d of yanytype piston, slide-valveor even a two-waycock) `vwhich sometimes permitswaterrom the chargingtrough to be led to'the cylinder of lthede'vice,and sometimes permits this cylindeigwwhich then constitutes a hydraulic'brake,` to' bel `put -into communication. with the outlet.

VFrom the foregoing explanation it .becomes obvious thatiin order toeffect a weighing,- the 'following operations will have to beaccomplished successively, to :wit: 4

f 1. "Bring up l weight Mf thnsfreleasing the im f-fio'at'F allow :theliquid to imma" in g ,open

valve j and waituntil the liquid overliows .the inner edges of reservoirR.

2. .At this moment close inlet valve S.

Float F having become balanced as the excess of liquid which hasoverliowed. is evacuated through valve j; ,reverse .the double valveandopen valve 4. Operate the distributor d to let down piston P which is atthe time at the top ot its travel. Due to thismotionweight M willdescend and rest on the bottom of ioat F which it will then tendtobi-ing downiuntil aquantity of liquid equal .toweight has beenevacuated by overflowing into the gutterand then discharged. throughvalve j. This will happen when, the piston having gone down low enough,hooks K have been released -from contact with suspension ears K and theF and M sethas become. a treefioat.

These four operations, which constitute the complete cycle, will 1thenbegin yagain and continue being repeated in an automatic manner.

In fact, the piston being atbottom ofv its travel, as above explainedand las shown by the drawing, tappet T will act on thc-disH tributor,thus opening the cylinder t-o water admission.

' The piston will thenv 'go up, hook up weight M and lthe linger tcarried by oat-reservoir F will act on the counterweighted lever of theinlet valve S to open that valve.

v Continuing' upwards float F will, by means of asecond finger zf,reverse the double valve j-j, opening valve j.

A moment afterwards, the pistonhaving reached the top otits travel, thelioat gets near it too, the level ofthe liquid tending to become flushwith the overfall constituted by the edge of reservoir lt.

After fiush level is reached, overflow takes place and this overflow isutilizedto start the above-indicated operations 2, 3 and 1i.

rThe part that, utilizing ythe overflow. is employed to actuatefthenecessary operating motions is the container or vessely V. supported byav forked lever .the other end of which carries a balancingcounterweight D.

Saidcontainer has, :atits lower part, an; out- Container V havingreceived aA suiiicient quantity of overflow-u liquid will, sini: dawnCil and shut valve S, the counterpoise of said container acting on thecounterweight c of said valve (movement 2).

Container V being lowered, its contents will run out through the outletof the container into a discharge trough N, and as soon as it hasemptied it will be raised by the action of its counterweighted lever,the terminal D2 of which will engage a hinged tappet r carried by avertical control rod U and likewise move said rod upward. A finger 25fixed to the control rod will engage and operate the double valve j',during this movement, indicated in step 3; the upper end of the rodbeing attached to a cross-head /Zf to which the stem of the piston valved3 of the distributor is also attached.

Duo to the upward movement of vessel V and through the same control rodU operation e of the distributor will be effected.

As will be apparent the working of the device is automatic and dependentonly on admission of the liquid to be weighed.

lf, in fact. such admission should cease on account of the working beingstopped through any cause, piston P having gone up to the top of itstravel would remain there. kept by the water pressure, while float. Fwould be immobilized at any point of its upward travel until a` newadmission of liquid sends itl up again.

Accuracy of weighing' will be the greater' the less the speed with whichfloat F arrives at its lowest position and the smaller therefore thealternate oscillation imparted to the float before it becomes finallybalanccd.

In order to decrease the ultimate downward speed of fioat F as well asthe amplitude of oscillation three devices may, for instance, be used:

l. As diagrammatically illustrated on the drawing, piston P may bearranged so as to mask, at the bottom of its travel` the water outlet.Gutflow being rendered more difficult the down-motion speed of float Fwill be decreased. Indeed, consideration of the law governing thedownward motion of said floatwill show that the reaction push of theliquid increasing according to sinking, the speed will already tend togo on decreasing.

9.. Float Fs immersed cylindrical part may de fitted with one or apluralityT of fins which will increase friction and damp oscillations.The drawing shows a fin or paddle made up of two angle-pieces.

The edge or rim constituting an overfall sill for reservoir R may not behorizontal and continuous but have a notch such as ll' (or a series ofindented notches) which will render more accurate the final balancing ofthe float at a precise level, such level being determined by the lowersecondary sill.

The above described device, is, of course, to be combined with asuitable counter or meter registering the number of oscillations. Ofcourse, also the special arrangement of counterpoises, rods, and tappetsshown by the drawing is merely indicative limitative, it beingpermissible to i connections required for operating oie various valvesor distributors in different ways which in no manner affect theessential fe: tures of the machine.

In the modified arrangement represented in Figures 5 and 6, thehydraulic device is located at one side of reservoir R and parallel withthe axis thereof, the weight being lifted by a cable and pulleyconnection. The parts common to this construction and the one firstdescribed are indicated by the same reference letters as in the firstconstruction but with the addition of the prime mark. The partsdesignated L in Figures 5 and (j are three vertical columns whichjointly support at their tops a frame L carrying a pair of guide pulleysL2 over which passes a cable L3 connected at opposite ends with theweight M and the piston P. rlhe distributor IZ is here shown as of theplug valve type instead of the piston valve type. rlhe figures indicatedrepresent the apparatus in the piston-ascent stage, the tributor valvehaving been opened by means of a lever fm. connected to the control rndU', which latter has itself been actuated by the ascent of vesse V afterits cinpty'ig. exactly as in the first form. The piston l descends underthe influence of the pre rc of the water admitted through the dievributor d', raises weight M and thus enables float F to rise byfiotation on the liquid to be weighed which enters through the then openvalve S.

Having now particularly ascertained and described the nature of my saidinvention well as the manner in which the saine is to be performed, Ideclare that what l claiin is:

l. Liquid weighing apparatus, comi rising a reservoir to receive liquidto he weighed; an overow gutter on the re" r voir having a dischargeoutlet; an inlet valve to control the supply of liquid to the reservoir;a rising-and-falling float tank in said reservoir; a weight movablewithin and tively to the tank to cause the saine to displace into theoverflow gutter a prede mined quantity of liquid; a device for rais ingand lowering the weight; and a train of connections between said deviceand said valve for automatically controlling the movements of the fioattank and weight.

2. Liquid weighing apparatus, comprising a reservoir to receive liquidto be weighed; an overflow gutter on the reservoir having a dischargeoutlet; an inlet valve to control the supply of liquid to the reservoir;a risingand-falling fioat tank in said reservoir; a

llt)

weight movable within and relatively to the tank to cause the same todisplace into the overiilow gutter a predetermined quantity ot liquid; ahydiaulic device for raising and lowering the weight; a distributor forregulating the supply of motive fluid to said device; and a train otconnections between said distributor and valve for automaticallycontrolling` the movements of the float tank and weight.

Liquid weighing apparatus, according to claim Q, in which the hydraulicweightoperating device embodies a cylinder and piston, the latter havingconnections 'with the weight; and in which the connecting train betweenthe distributor and the inlet valve embodies a control rod connectedwith a piston valv-e comprised in said distributor, so that said pistonvalve is shifted in accordance with the movements of said rod.

4. Liquid weighing apparatus, comprising a reservoir to receive liquidto be weighed; an overflow gutter on the reservoir having a dischargeoutlet; an inlet valve to control the supply et liquid to the reservoir;a rising-and-falling loat tank in said reservoir; a weight movablewithin and relatively to the tank to cause the same to displace into theoverflow gutter a predetermined quantity ot liquid; a device for raisingand lowering the weight; and a train ot connections between said deviceand said valve .tor auto-- matically controlling the movements oit thelloat tank and weight, said train including a movable vessel disposedexterior to the reservoir and adapted to receive the. liquid dischargedfrom the overtlow gutter.

5. Liquid weighing apparatus; according to claim 4, in which the movablevessel is supported by a counterweighted lever which normally holds itin raised position, but which is rocked and thereby caused to close theinlet valve when said vessel sinks under the weight of the liquiddischarged into it from the gutter.

6. Liquid weighing apparatus, comprising a reservoir to receive liquidto be weighed; an inlet valve to control the supply ot liquid thereto; arising-and-falling float tank in .the reservoir; a weight movable withinand relatively to said tank to cause the same toA displace apredetermined quantity of liquid from the reservoir by overflow; adevice tot operating said weight; a controller for said device; and adevice to receive the overflow from said reservoir having separate meansassociated with it ttor operating said con troller and said inlet valve.r

7. lVeighing apparatus, accordingI to claim 6, in which the receivingdevice comprises a vertically-movable vessel disposed exterior to thereservoir; and in which the controlleroperating means and thevalve-operating means are respectively actuated on the upward anddownward movements ot said vessel.

8. Liquid weighing apparatus. comprising a reservoir to receive liquidto be weighed; an inlet valve to control the supply ot liquid thereto; arising-and-talling lloat tank in the reservoir; a weight movable withinand relatively to said tank vto cause the same to displace apredetermined quantity ot liquid from the reservoir by overflow; adevice tor operating said weight; a controller for said device; arising-and-talling vessel disposed exterior to the reservoir in positionto receive the overtlow therefrom; a weighted lever whercon said vesselis mounted and tending to raise the same, but yielding when the vesselis lilled to permit its descent; said lever adapted to operate the inletvalve during such yielding movement; and means actuated by the upwardmovement of said vessel when emptied for operating the controller.

9. Liquid weighing apparatus, comprising a reservoir to receive liquidto be weighed; an inlet valve to control the supply oit liquid thereto;a rising-and-talling 'float tank in the reservoir; a weight movablewithin and relatively to said `tank to cause the same to displace apredetermined quantity ot liquid from the reservoir by overflow; adevice for operating said weight; a controller ttor s device; arising-and-talling vesse disposed exterior to the reservoir in positionto receive the overllow therefrom; a verticallymovable rod tor operatingsaid controller; means tending to move said vessel upward but yieldingwhen the latter lills to permit its descent, said means adapted tooperate the inlet valve during such yielding movement; and means toractuating said rod during and consequent upon the upward movement of thevessel.

In testimony whereof I alliX my signature.

GEORGES LOUIS VILLAIME.

